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Searching value from multiple columns

     
9:44 am on Dec 16, 2010 (gmt 0)

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Browsed (googled) around with this question but could not find a definitive answer...

I have 20 columns containing numbers. All numbers are unique in row.
How can I find all the rows containing single value, that can be in any of the 20 columns?

This far I have only seen solutions like
WHERE col1=1 OR col2=1 OR col3...

While I can produce these queries without breaking a sweat with code, in my eternal quest for knowledge and more elaborate (efficient) solutions I present my question to you: Really, no other way than the one mentioned above?

Thanks for any input!
1:56 pm on Dec 29, 2010 (gmt 0)

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No other way that I know of. :)